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ASUS Prime Z390-A ATX motherboard with black PCB and silver heatsinks

ASUS

ASUS Prime Z390-A Intel motherboard LGA 1151 300 Series DDR4 4266 MHz SATA 6Gb/s ATX

SKU CH-JGVG-3JT98

ATX Intel motherboard with LGA 1151 socket, DDR4 4266 MHz support, dual M.2 slots, USB 3.1 Gen 2, SATA 6Gb/s, AI overclocking and Aura Sync RGB lighting

  • CPU TypeATOM
  • AI overclocking tunes CPU performance automatically
  • OptiMem II routing enables DDR4 4266 MHz memory stability
  • M.2 heatsink cuts SSD temps by 20°C
  • Realtek ALC S1220A codec delivers 8-channel high-definition audio
  • AURA Sync RGB lighting synchronises with compatible hardware

Built for 9th and 8th Gen Intel Core

This ATX motherboard uses the LGA 1151 socket and the Intel Z390 chipset to support 9th and 8th generation Intel Core processors. It targets builders who want a mainstream platform with AI overclocking, dual M.2 slots and USB 3.1 Gen 2 connectivity for a responsive desktop or workstation.

Memory headroom and expansion limits

DDR4 runs up to 4266 MHz with ASUS OptiMem II trace routing for improved signal integrity during overclocking. Dual M.2 slots accept fast SSDs, while six SATA 6Gb/s ports handle additional storage. The board does not serve users who need more than two M.2 drives or who require a third full-length PCIe slot for extra add-in cards.

Bundled software and hardware extras

FanXpert 4 with an AIO pump header gives granular fan and liquid-cooling control through the UEFI or Windows. AURA Sync RGB lighting coordinates with compatible components. The Realtek ALC S1220A codec with Crystal Sound 3 handles 8-channel audio, and a Thunderbolt 3 header allows an optional add-in card for high-speed peripherals.

Highlights

  • AI overclocking tunes CPU performance automatically
  • OptiMem II routing enables DDR4 4266 MHz memory stability
  • M.2 heatsink cuts SSD temps by 20°C
  • Realtek ALC S1220A codec delivers 8-channel high-definition audio
  • AURA Sync RGB lighting synchronises with compatible hardware

Specifications

CPU TypeATOM

Questions about this item

Will this LGA 1151 motherboard run my existing DDR4 memory at 4266 MHz?

The board supports DDR4 speeds up to 4266 MHz and uses ASUS OptiMem II trace routing to preserve signal integrity, so compatible modules can reach that frequency if the CPU memory controller allows it.

How do I confirm the AI Overclocking and Fan Xpert 4 cooling profiles are active after first boot?

Enter the UEFI BIOS, run the 5-Way Optimization 1-click OC routine, then open Fan Xpert 4 in Windows to verify the AIO pump header and fan curves respond to thermal telemetry.

Does the box include the M.2 heatsink and Wi-Fi antennas, or must I buy them separately?

The M.2 heatsink is pre-installed on the board; Wi-Fi antennas are not included because the board has no onboard Wi-Fi, so you only add them if you install a separate wireless card.

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